Adjustable spray nozzle



H. D. BINKS ADJUSTABLE SPRAY NOZZLE:

Apr. 17, `1923. 1,452,264

Filed March 9, 1921 ff @W WM Patented Apr. 17, 1923.

UNITED STATES 11,452,264 .PATENT OFFICE.

HARRY D. BINKS, OF RIVER FOREST, ILLINOIS.

ADJUSTABLE SPRAY Nozznts.

Application led March 9, 1521. Serial No. 451,028.

n spraying liquids'and in its general objects includestheproviding ofsimple means for adjusting the quantity offthespray'and for indicatingthe adjustment.

Generally speaking, my invention aims to provide a spraying appliancewhich will af- :ford desirable adjustments without requiring it to betaken apart and without leaving any uncertainty as to the sprayingcapacity for which the nozzle is adjusted. For this purpose my inventionaims to provide a spraying' appliance which can readily be mampulatedfor adjusting the same lwithout taking apart any portion of it, whichwill permit such adjustment to be made without varying the pressure atwhich Huid is supplied to the nozzle, land which will readily indicatethe rate of spraying for which the nozzle is adjusted.v Furthermore, myinvention aims to provide an adjustable appliance of thiskind employingrelatively few and simple parts, to provide simple means for maintainingthe desired tight interitting of the operative parts; also to provide aconstruction which can readily be adapted to spraying appliancesregardless of the desired distances between the mouth of each applianceand the point from which the adjustment can conveniently be made and atwhich the corresponding adjustment is to be indicated. Still further andmore detailed objects will appear` from the accompanying drawings, inwhich- Fig. 1 is a central and longitudinal section through a spraynozzle embodying my vinvention and. designed for spraying oil.

Fig. 2 isv a similar section through a shorter form and one including adilerent mounting for the portion of the nozzle in which the spray isproduced. j Fig. 3 1s an end elevation of the nozzle of Fig. 1, takenfromvthe right hand-end of the latter ligure.

In the embodiment of the drawings, I am showing the volume-adjusting andindicating features of my invention as applied to a spray nozzle oratomizing nozzle of the general type in which a spirally advancingmotionis imparted to the liquid before`the same reaches the contracted outletof the nozzle, and in which the spirally advancing liquid is broken upinto a spray while itis being forced through this contracted outlet. Forthis purpose,I4`ig. 1 shows a construction including a tubular nozzlebody 1 recessed at its forward end to afford an annular recess forreceiving a iange 3 on the forward end of a cup 4, the bore of which cupforms the whirling chamber in which the liquid is spirally advancedbefore it is forced out through the outlet 5 of the nozzle. This outlet5 is quite small in bore compared with the diameter of the whirlingchamber 6, and this outlet desirably is in a head 7 threaded upon theforward end of the nozzle body 1 and arranged for clamping the y flangei 3 against the mouth end of the nozzle body. The liquid which is to besprayed is supplied under pressure to the bore of this body 1 ithroughasupply pipe 8, and is admitted to the chamber 6 through a plurality ofinlets 9 in the side wall of the said cup shaped VAamember, the saidinlets being here shown as comprising a pair diametrically opposite eachother and substantially tangential of the chamber 6 as shown in Fig. 4.

With the parts thus arranged and with the outer end of the inlets 9openin freely into the interior of the nozzle bo y, the

liquid supplied through the 'pipe 8 will irst be spirally advancedwithin the chamber 6 and then broken into a spray while issuing throughthe outlet 5, and the rate at which the spray issues will bepredetermined by the natureof the liquid the size of the inlets 9 andthe pressure under which the liquid is supplied. To change this ratewithout substituting another cup-sha ed member e having a different sizeof in ets and without varying` the pressure at which the liquid is suplie a num er of sets of inlets of differentl sizes and provide a controlmember arranged for` admitting the liquid through only one set of theinlets at a time. n

In the present embodiment, Fig. t shows I provide this member 4 withthese three sets of inlets selectively, I provide a control memberhaving a cup-.shaped end 12 sleeved upon. and snugly houslng theexterior of the cup shaped member 4 and having a single pair of ports 13adapted to aline interchangeably with the inlet ends of the three setsof inlets. This control cup 12 is fast upon a stem 14 which extendsthrough the rear end of the nozzle body and which can be rotated bymeans of a knob 15 pinned to its outer end. By using this knob formanually rotating the control member, I can bring the Aports 13 intoalinement with the entrance ends of any one of the plurality of sets ofinlets, namely' the inlets 9, 10 or 11, thereby varying the rate atwhich liquid is admitted to the whirling chamber and correspondinglyvarying the rate at which the spray is emitted from the nozzle.- Then Ialso provide means associated with the control member for indicating theposition to which the latter is adjusted, and desirably for indicatingthis in terms of the quantity of liquid which will be emitted in a formof spray when the liquid is supplied at a given ressure. For example, Imay fasten an in icating pin 16 to the stem 14 of the control memberbetween thel knob 15 and the rear of the nozzle body and may providemarkings on the rear end of the appliance alining respectively' with theindicator 16 according as the control member has its ports opposite oneor another of the said sets of inlets. For example, Fig. 3 shows a rearview of an oil burning spray nozzle having inlets designed respectivelyfor furnishing one, three and eight gallons of oil spray, and shows at aglance that the control member is in the position in which the nozzlewill deliver one gallon of spray in a given time at the predeterminedpressure.

To keep the supply of fluid from leaking through to the other inlets, Idesirably form the exterior of the cup shaped member 4 and the adjacentportion 12 of the control member so that these will snugly fit oneanother, as by providing both of these with similarly tapered andinterfitting frusto-conical surfaces. I also desirably provide means forpressing these ortions against each other to maintain a tight fit. forwhich purpose I am here showing a compression spring 17 interposedbetween the rear end of the nozzle body 1 and a pin 18 which projectslaterally from the stem 14. Then I am also showing the rear end of thenozzle body as provided with a stuffing box through whlch the stem 14extends, this box includsure of liquid the volume of the delivered sprayper minute will depend on the size of the inlets with which the ports inthe control members are alined, and that after these respective volumeshave been ascertained and theindicating portion on the rear end of theappliance has been correspondingly marked, even an inexperienced helpercan readily manipulate the appliance without any uncertainty asl to therate at which the spray is delivered. Moreover, the desired adjustmentcan instantly be made Without the use of any tools, thereby avoiding allloss of time. For example, in using oil as. the fuel for heating kilnsit may' be necessary at first to produce a relatively low tempera- -tureso as to evaporate the moisture in the clay without cracking the moldedpieces, for which purpose the one gallon rate indicated by theadjustment of Fig. 3 may be ample with a given size and arrangement ofspray nozzles and a given pressure at which the oil (or rather themixture of oil and air) are supplied. When the moisture has thus beendriven out, the knob 20 can instantly be turned` so as to bring thepointer 16 oppo- 95 site the mark 3, thereby adjusting the nozzle to thecorrespondingly higher rate of spray and producing a correspondinglyhigher intermediate temperature, after which the knob can be turnedfurther on to the 8 to spray 100 the oil at the rate required for themaximum heating of the kiln.

However, while I have heretofore illustrated and described my inventionas employed in connection with an oil spraying nozzle used for theheating of a kiln, I do not wish to be limited to this particularembodiment or use of the same, as my invention could obviously be usedfor many purposes Without departing from its spirit.

So also, while I have shown a construction includin a long tubular body1 ad-apted to extend or a considerable distance into a kiln or furnaceand have shown the whirling or spray producing chamber as formed withm acup-shaped member having a flange clamped between the nozzle body andthe forward head of the nozzle, I do not wish tofbe limited to these orother details of the construction and arrangement, it being obvious thatthe same might be varied in many respects without departing from t-hespirit of my invention or from the appended claims. F or example, Fig.2shows another embodiment including a relatively short nozzle body 25having a forward cap 23 threaded into the bore of the nozzle body andhaving the flange 21 of the cup-shaped member threaded into the cap 23.In this case, the cup-shaped member is desirably lso providedwith a stem22 terminatingin a square end 24 which extends rearwardly beyond theopen end of-the ap 23, so as to permit this member to be screwed intoposition, or unscrewed if desired.

I claim as my invention:

1. In a spray nozzle, a casing enlarged at one end and having an outlet,a cup-like member iixedly secured within the vcasing withfits open endfacing and communicating with the outlet and having its periphery spacedfrom the casing interior, said cup-like member havinga plurality ofpairs of lateral ports extending from its interior through itsperiphery, and a rotatable stem in the easing having a cup-shapedendrotutably mounted over the periphery olf' the cup-shaped member andhaving a single pair of ports for selective register with the respectiveports of a pairof cup-shaped member.`

2. In a spray nozzle, a casing having an outlet, a hollow member in thecasing having its open end communicating with the outlet and having aseries of lateral ports ports of the extending from its interior throughits periphery, and a rotatable stem in the easlng having a part thereonrotatably mounted over the periphery of the Jh'ollowqmember and having aport for selective register with the ports of said hollow member.

3. In a spray nozzle, a casing, a hea-d se-A cured to thecasingandhaving an outlet and an interior threaded part, va cup-shaped memberhaving a flange threaded into engagement with the threaded part of thehead and having a stem formed to enable screwing of the member intoposition in the casing, said member having -a series of ports extendingfrom its interior through lts periphery, and a rotatable stem in thecasing having a cup-shapedpart rotatably engaged Y over theperiphery othe cup-shaped member and over the stem of the 'latter and having a portforl selective register with one of the ports of the cup-shaped member.

Signed at Chicago, Illinois, March 7th, 1921.

HARRY D. BINKs;

